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This eMag explores the challenges of modernizing, migrating, and scaling applications, spotlighting architectures that are redefining what is possible in software today.
How did Uber migrate critical systems to a hybrid cloud architecture with zero downtime? How can we architect software to reduce costs and latency in the cloud? What are the major scaling challenges in legacy modernization and mainframe systems? And why is technological renovation so often overlooked?
While the scale of some of these migration and modernization efforts may seem extreme, posing challenges rarely faced by smaller organizations, there are valuable lessons to be drawn. Legacy systems are an inevitable part of success in long-standing companies, but transforming them is essential for future innovation.
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This eMag includes:
- In "Uber's Blueprint for Zero-Downtime Migration of Complex Trip Fulfillment Platform," Madan Thangavelu discusses how Uber migrated critical systems from on-prem to a hybrid cloud architecture with zero downtime and business impact.
- "How to Minimize Latency and Cost in Distributed Systems" by Amir Souchami emphasizes that distributed systems spanning multiple availability zones can incur significant data transfer costs and performance bottlenecks.
- In "Legacy Modernization: Architecting Real-Time Systems Around a Mainframe", Jason Roberts and Sonia Mathew discuss how National Grid built an event-driven system using change data capture on top of a DB2 mainframe to power a cloud-native GraphQL API hosted in Azure.
- Covering another legacy modernization scenario, in "Transforming Legacy Healthcare Systems: a Journey to Cloud-Native Architecture", Leander Vanderbijl shows how Livi, a digital healthcare service, managed data synchronization and decided between serverless and containerized solutions.
- Finally, in "Renovate to Innovate: Fundamentals of Transforming Legacy Architecture", Rashmi Venugopal explains why technological renovation is often overlooked and shares learnings on gracefully outgrowing technology and architectural choices, scaling payment orchestration at Netflix to 250M members and preparing for the next 250M.
We hope you find value in the articles and resources in this eMag and are inspired by these stories. We would love to receive your feedback via editors@infoq.com, on Bluesky, or on X (formerly Twitter). We hope you enjoy reading it!